arm64: configs: Disable QCOM_MEM_OFFLINE

CONFIG_MEMORY_HOTPLUG is not set

Disable QCOM_MEM_OFFLINE as we are not useing it

Bug: 150911847
Test: Boot and check zone info
Signed-off-by: Martin Liu <liumartin@google.com>
Change-Id: I3d405e8c182176bc96bb00011d800174614db2ab
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>